Hard panel foldout bunk shelter

ABSTRACT

A collapsible foldout bunk shelter, extendable from a camper trailer, comprising a floor movable externally through an opening in a wall of said trailer, having stable, hard and impervious wall panels foldable and collapsible over said floor, and a stable, hard and impervious roof panel for such wall panels.

United States Patent Keith W. Knudsen 1066 Campbell Street, Neenah, Wis.54956 38,448 May 18, 1970 Jan. 4, 1972 lnventor App]. No. Filed PatentedHARD PANEL FOLDOUT BUNK SHELTER 11 Claims, 14 Drawing Figs.

U.S. Cl 296/23 R, 296/27, 52/66 Int. Cl 860p 3/34 Field of Search296/23, 27,

[56] References Cited UNITED STATES PATENTS 1,734,803 11/1929 Gable296/23 1,431,783 10/ 1922 Diefenderfer 296/23 3,288,520 11/1966Krutzikowsky.... 296/23 3,050,331 8/1962 Mansen 296/27 3,5 60,042 2/1971McCarthy 296/23 Primary ExaminerPhilip Goodman AttorneyStanley E. BinishABSTRACT: A collapsible foldout bunk shelter, extendable from a campertrailer, comprising a floor movable externally through an opening in awall of said trailer, having stable, hard and impervious wall panelsfoldable and collapsible over said floor, and a stable, hard andimpervious roof panel for such wall panels.

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SHEET 5 [IF 5 HTTOR/VEY HARD PANEL FOLDOUT BUNK SHELTER Camper trailers,of the expandable type having canvas or tarpaulin foldout bunk shelters,or the like, are quite uncomfortable to live and sleep in because thecanvas or tarps of such foldout shelters become damp and clammy in rainyweather, are often too hot or too cold as they fluctuate with changes ofoutside temperatures, due to poor insulative properties, and presentvery little safeguard security. I-Iuntsmen, fishermen and vacationershave all experienced the hinterland insecurity, and the discomfort ofliving under wet, cold or hot canvas for days at a time.

The purpose of this invention is to lessen the above disadvantages andprovide a foldout bunk shelter that is impervious to rain, provides arelatively high degree of temperature insulation, and offers reasonableprotective security, thereby resulting in a foldout bunk shelter ofgreatly increased living comfort and suitable for habitation overvacation and hunting periods, whatever the weather.

An object of this invention is the provision of a foldout bunk, for acamper trailer, distinguished by stable, hard, or rigid sidewall androof panels having good water-impervious and temperature insulationproperties suitable for the intended purpose.

Another object is to provide a foldout bunk, for a camper trailer, thatis pivotally movable from a position within to a position without thetrailer.

Yet another object is to provide a foldout bunk, for a camper trailer,that is supported for slidable movement from a position within to aposition without the trailer, and wherein such support means terminatesoutwardly in cantilever support means.

Still another object is the provision of a foldout bunk having a pitchedroof mounted on hard foldable sidewalls, said sidewalls being foldablealong their median lines.

Other specific features and many of the attendant advantages of thisinvention will be readily appreciated as the same becomes betterunderstood by reference to the following detailed description whenconsidered in connection with the accompanying drawings in which likereference numerals designate like parts throughout the figures thereofand wherein:

FIG. 1 is a perspective illustration showing a fully collapsed campertrailer, in its initial stage, preparatory to its erection;

FIG. 2 is a perspective illustration depicting the second stage oferection, wherein the camper roof is partially raised and the sidespartially unfolded;

FIG. 3 is a perspective view illustrating the third stage of erection,wherein the camper shell is fully raised and erected, and showing thefolded end bunk, interiorly of the trailer, pivotal outwardly asindicated by the arrow;

FIG. 4 is a perspective illustration disclosing the fourth stage oferection, showing the folded end bunk structure pivotally withdrawn fromthe trailer and with the roof swung out to an operative cover position;

FIG. 5 is a perspective view showing the fifth stage of erection, andshowing one side panel of the end bunk shelter fully raised to anupright erected position;

FIG. 6 is a perspective view illustrating the sixth, and seventh orfinal, stages of erection, showing the remaining side panel and the endpanel, respectively, fully raised and erected, thereby accomplishing afully erected trailer camper including enclosed end bunk shelters;

FIG. 7 is a longitudinal section view taken on line 7-7 of FIG. 4showing the collapsed bunk structure pivotally mounted on the trailer,and movable pivotally from a position within the trailer, as indicatedby dotted lines, to a position outside the trailer as shown by solidlines;

FIG. 8 is a perspective view of camper trailer, absent the bunkstructure, showing the roof support posts, and the crank and cable meansfor raising and lowering said shell to an erected and collapsedposition, respectively;

FIG. 9 is an interior perspective view of a modification, lookingoutwardly toward one of the end bunk shelters, partially erected,showing slidable support means for supporting the outwardly movablefloor of the bunk structure;

FIG. 10 is an interior perspective view, similar to FIG. 9, showing thefinal stage of erection wherein the end panel of the shelter ispartially raised, and showing the releasable latch means on the roofpanel for securing said end panel in erected position;

FIG. 11 is a fractional section view, taken on line 11-11 of FIG. 9,showing the collapsed bunk structure disposed within the trailer asindicated by the dotted lines, and slidably disposed outside the traileras shown by the arrow and solid lines;

FIG. 12 is a section view taken such as on line 12-12 of FIG. 11,showing details of the slidable support means for the movable bunkfloor;

FIG. 13 is an enlarged fragmentary view of the slidable support means ofFIG. 12; and

FIG. 14 is a modification, in perspective view, showing the roof panelof the bunk shelter hingedly connected to the side panels of the bunkshelter itself, in lieu of being hingedly con nected to the roof of thecamper trailer, and wherein the side panels are foldable side panels inlieu of rigid side panels.

Referring now to the drawings, wherein like reference charactersdesignate like or corresponding parts throughout the several views,there is shown in FIG. 8 a somewhat conventional collapsible or foldablevehicular camper trailer to which the present invention is applicable.

However, the invention is not limited to collapsible-type trailers, butis also adaptable to permanently erected wall trailers.

The vehicular trailer proper comprises a traylike body generallyindicated at 20 supported on a wheeled chassis frame generally indicatedat 21 and is provided with conventional bar hitch means such asgenerally indicated at 22 shown in FIG. 2. An open-ended shellstructure, comprising a roof and sidewalls, provide a shelter orcovering on the trailer as hereinafter described.

The traylike body 20 comprises a rectangular flat open-top box or basehaving a bottom 23, two sidewalls 24 and 25, and two end walls 26 and27.

Inwardly foldable sidewall means generally indicated at 28 and 29, seeFIGS. 8 and 12, pivotally interconnect the box sidewalls 24 and 25 withthe downwardly extending side flanges 30 of the roof generally indicatedat 31 by means of longitudinally extending hinges such as at 32 and 33,respectively, thereby providing a shell or shelter structure over thetrailer box.

The foldable sidewall assembly 28 comprises a lower section 34 which ispivotally connected to an upper section 35 by means of a longitudinallyextending hinge 36. Sidewall 28 in cludes a foldable door 28'.

The foldable sidewall assembly 29 comprises a lower section 37 which ispivotally connected to an upper section 38 by means of a longitudinallyextending hinge 39.

Conventional elevating means for raising said roof and foldablesidewalls from a collapsed position to an erected position, see FIG. 8,comprise post support means generally indicated at 41, a cable systemgenerally indicated at 42 connected to said roof and with said postsupport means, and rotary crank means 43 journaled in said body box andoperatively connected with said cable system, whereby as said crankmeans is actuated in one direction the roof is raised; and as said crankis actuated in the opposite direction the roof is lowered.

The post support means comprises four hollow posts mounted at each comerof the trailer box, respectively, such as post 44, which is pinconnected to the trailer box by means of pin 45 and held erected bymeans of friction clip 46. Said posts are pivotally movable downwardlyto a horizontal position and held by a bracket such as at 47 mounted onsaid box, in a collapsed position, when the camper trailer as a whole iscollapsed for travel from place to place.

A pin or pulley 48 is mounted in the upper end of post 44, and acompanion pin or corner pulley 49 is mounted on the trailer box beneaththe lower end of said post 44.

An endless cable 51 has one end wound around the crank means 43, as at52, and the other end threaded through hollow post 44 and looped aroundpulley 48 at the upper end of aid post 44. Intermediately, the endlesscable passes over corner pulley 49.

An arm 53, secured to one run of the cable in said post, extends througha longitudinal slot 54 in said post, and engages a projecting bracket 55mounted on said roof at the corner thereof. Said arm functions to carrysaid roof in up and down movement, as said crank is correspondinglyactuated.

Similar elevating mechanism is provided at each other corner of thetrailer box and roof, each operatively connected to said crank means,for raising the roof uniformly and level.

It is to be noted that the shelter shell of the basic camper trailer ofFIG. 8 is shown without end closures. Said end closures of bunk openingsof said shell are provided with extendable foldout bunk shelters toincrease the living area beyond the box body 20 area, as hereinafterdescribed and shown in FIGS. 1 through 6, 9, 10, 11 and 12.

In view of the fact that the foldout bunk structures at the front andrear ends of the trailer are identical, the following description of thebunk structure at the front end of the trailer will suffice for bothbunk structures.

A rectangular movable platform or floor 56, such as shown in FIG. 7, isprovided in the trailer having up-turned flanges around the edgesthereof, such as side flanges 57 and 58, and inner and outer flanges 59and 61, respectively. Said movable floor 56 is disposed horizontally andinverted, and spaced above the box or trailer floor 23 and at the frontend opening of the shell, for an initial position, as indicated bydotted lines 56, and pivotally hinged to the front wall of the trailerbox as by hinge 60, see FIG. 7; or said floor may be disposedhorizontally and upright as indicated by dotted lines 56", see FIG. 11,and be slidably supported on the trailer by guideway and slidable railmeans, see FIGS. 9 and 10.

Said slidably supported movable floor is provided with a pair oflongitudinally disposed guide rails 62 and 63 mounted on the floor sideflanges 57 and 58, respectively, by any means, such as screws 64, seeFIGS. 9, 10, 12 and 13.

Said guide rails are slidably supported in longitudinally disposedguideways or channel iron members 65 and 66 mounted on box sides 24 and25, respectively, by any means, such as screws 67, see FIG. 13.

Said guide rails extend rearwardly of the movable floor 56, see FIGS. 9and 10, to provide cantilever support in the guideways when the movablefloor is slidably disposed outwardly of said front end or bunk openingwith the inner floor edge 59 disposed externally of and adjacent thelower edge portion of said bunk opening, for a final position. At itsouter final position the floor is cantilever supported on the railsextended from their guideways.

The side, end, and roof panels hereinafter to be described are of stablematerial characterized by being hard, strong, and impervious to water,such as of wood, metal, or fiber glass material, foam core material,hollow construction, or the like, suitable for intended purpose.

A pair of such similarly configured stable side panels 68 and 69,oppositely disposed, are hingedly connected at their lower edge portionsto the edges of said side floor flanges 57 and 58, respectively, bymeans of longitudinal hinges 71 and 72, see FIGS. 9, l and 12, saidstable side panels being movable from a collapsed position overlayingsaid floor 56 to a vertical erected position.

A stable end panel 73 is hingedly connected, at its lower edge portion,to the edge of the outer floor flange 61, by means of longitudinal hinge74, said hard end panel being movable from a collapsed positionoverlaying the floor 56 to a vertical erected position.

It is understood that the floor flanges 57, 58 and 61 vary slightly inheight to accommodate and allow said side and end panels to fold overeach other in a nested arrangement overlaying the floor.

Also, it is understood, that the stable side and end panels are of asize dimension to fall and collapse within the confines of the floorflanges.

Under normal conditions, a cushion mattress, or the like, not shown, onthe bunk floor 56, may support the collapsed side and end panels in asubstantially horizontal position; otherwise said panels may besupported directly on said floor.

A stable roof panel 75, dimensioned to suitably cover the zone definedby said erected stable side and end panels, is hingedly connected tosaid roof at the adjacent downwardly extended roof flange 30, by meansof longitudinal hinge 76, see FIG. 7, operative to swing from an initialposition under and adjacent the trailer roof 31 as indicated by dottedlines 77, through the end opening, and to a final position to overlaythe upper edges of said erected side and end panels as indicated byarrow 78. Any suitable releaseable means can be provided for securingsaid roof panel in its initial position at the underside of the trailerroof 31, such as rotatable latch bar means generally indicated at 79,see FIG. 7. Also any suitable releaseable means can be provided forsecuring said roof panel in its final position to the erected end panel,such as slidable latch means generally indicated at 81, see FIGS. 9 and10, said latch means being associated with latch receiving recesses insaid end panel as indicated at 82, see FIG. 10.

Said roof panel means includes downwardly extending flanges 83, 84 and85 along the two side edges and end edge thereof respectively, see FIG.9 and 7.

A pair of elongated cleats 86 and 87 are mounted on the underside ofroof panel 75, spaced inwardly from and disposed along the side edgeflanges thereof, respectively, see FIG. 9. The slots or channels formedbetween said cleats and said roof side flanges are adapted to receivetherein the upper edge portions of side panels 68 and 69, respectively,for releaseable securement therein when said panels are functionallyerected.

The vertical end edges of the side panels 68 and 69, erected, are alsoprovided with inwardly extending flanges 88 and 89, respectively, seeFIGS. 9 and 10, to provide abutment stop means for end panel 73, whensaid end panel is disposed erected and cooperatively secured by thelatch means 81. Roof end flange 85 also functions as abutment stop meansfor end panel 73.

Operation: When one desires to erect the trailer from its collapsed andcompact position as shown in FIG. 1, one initially turns the rotarycrank means 43, see FIG. 8, to start the raising of the trailer roof 31and the associated side panels 28 and 29, such as shown in FIGS. 2 and8.

Continued turning of the crank 43 eventually raises the trailer roof andassociated sides to the fully erected position shown in FIG. 3.

In the event one is dealing with the slidable bunk floor construction,one then grasps the floor means 56 and pulls said floor means andassociated stable side and end panels thereon from a dotted position 56"in the trailer to a position outwardly of the trailer, as indicated byarrow 90, the floor means being slidably movable and supported on guiderails 62 and 63 slidably mounted in guideways 65 and 66, see FIGS. 4, 11and 9.

To erect the foldout bunk shell, one merely turns the rotatable latch79, see FIGS. 7 and 4, to release the stable roof panel 75 from itsstored roof position, as shown by dotted lines 77, through the endopening of the trailer, and to an elevated position as shown by arrow78, and holds same elevated while erecting the side panels as follows.

To erect the stable side panels of the foldout bunk shelter, one merelypivotally raises stable side panel 68 to a vertical position as shown inFIGS. 5, 7 and 9, engaging the top end portion of said side panel in theslot or channel formed between cleat 86 and roof flange 83.

To erect the other side panel, one pivotally raises such hard panel 69to a vertical position as shown in FIGS. 6 and 9, engaging the top endportion of said side panel in the slot or channel formed between cleat87 and roof flange 84.

Finally, the end stable panel 73 is pivotally raised, from within thetrailer, to a vertical position abutting with side panel and roofflanges 88, 89 and 85, respectively, and finally engaged in said erectedposition by means of slidable latch means 81, see FIGS. 6 and 10.

The corresponding foldout shelter means on the other end of the traileris similarly unfolded, raised, and erected; and both foldout sheltersare thus ready for occupation.

To fold, collapse, and store said foldout bunk shelters back into thetrailer, one merely reverses the aforesaid erection operation.

One may provide a removable brace means 92 as shown in FIG. 11, toprovide greater stability and security to the pulled out floor means.

In the event one is dealing with the pivotally hinged bunk floorconstruction, see FIGS. 3 and 7, wherein the floor is pivotally hingedas at 60, and supported on cleats 60 mounted on the trailer box sides 24and 25, by any means, one reaches into the trailer and grasps the freeinner edge of the floor and movably pivots the floor upwardly andoutwardly, from its initial dotted line position 56 within the trailerto a final position outwardly of the trailer as indicated by arrow 102.A removable brace means 101 interconnecting the floor 56 and the trailerwall 27 is provided to hold the floor in a stabilized horizontalposition.

In erecting this pivotal construction, the roof panel 75 is likewisefirst released from its stored position 77, swung outwardly, andmanually held elevated while the side panels are being erected.

To provide pitch for the roof panel, it is preferred that said hard sidepanels have upper edges that decline from a high point at their innerends adjacent said trailer to a relatively low point at their outer endsadjacent said stable end panel.

The modification shown in FIG. 14 illustrates a bunk shelter havingstable foldable side panels generally indicated at 93 and 94, foldableat their geometrical median lines by means of hinges 95 and 96.

Said foldable side panels, pivotally interconnect the movable floor 56with the roof 75 by means of longitudinally extending hinges such asindicated at 97 and 98, respectively, in lieu of the roof being hingedlyattached to the trailer roof as hereinbefore described. Thus, in thismodified construction, the bunk shelter roof rides up and down with theattached foldable side panels.

The end panel 99 is hingedly mounted on the floor and is pivotallyerectable to an upright position and secured as is end panel 73hereinbefore described.

In this modification, the roof and connected foldable side panels areraised manually, and the end panel then erected and secured to hold thebunk shelter, erected and assembled, as hereinbefore provided.

This modification can have the floor thereof slidably supported onguideway and slidable rail means, or pivotally hinged, as hereinbeforedescribed.

Some characteristic features of this invention are the provision of afoldout bunk shelter made of stable and impervious panels; the provisionof a foldout bunk shelter having a pitched roof and foldable stablesidewalls foldable along median lines thereof; the provision of afoldout bunk shelter movable pivotally from a position within to aposition without the trailer; and the provision of a foldout bunkshelter slidably supported for movement outwardly of the trailer, andwherein such support means terminates outwardly in cantilever supportmeans.

Ovbiously many modifications and variations of the present invention arepossible in the light of the above teachings. It is therefore to beunderstood, that within the scope of the appended claims, the inventionmay be practiced otherwise than as specifically described.

What is claimed and desired to be protected by Letters Patent of theUnited States is:

I. In a camper trailer having a wall opening, a box base, and roofmeans, the combination of a collapsible, stable panel, foldout bunkshelter in said trailer movably associated with said opening,comprising,

a. a movable rectangular floor means initially horizontally disposed insaid trailer at the lower edge portion of said opening,

b. support means movably mounting said floor means or. said box base,for conveying said floor means from said initial position in saidtrailer, through said opening, to a substantially horizontal finalposition outwardly of said opening with the inner edge of said floormeans disposed adjacent the lower edge portion of said opening,

c. a pair of substantially rectangular, rigid, similar, stable sidepanel means, oppositely disposed, having corresponding edges disposedalong and adjacent the opposite side edges of said floor means,respectively,

d. first hinge means hingedly connecting said stable Side panel means tosaid floor means at said corresponding edges and said opposite sideedges, respectively, said side panel means being movable from acollapsed position overlaying said floor means to a vertical erectedposition, respectively,

. a substantially rectangular stable end panel means having an edgethereof disposed along and adjacent the outer end edge of said floormeans,

f. second hinge means hingedly connecting said stable end panel means tosaid floor means at said end panel edge and said floor outer end edge,respectively, said end panel mean being movable from a collapsedposition overlaying said floor means to a vertical erected position,

g. a substantially rectangular stable roof panel means to cover the zonedefined by said erected side and end panel means and overlay the upperedge of said erected side and end panel means,

h. third hinge means hingedly connecting said stable roof panel, at anedge thereof, to said trailer roof means operative to swing from aninitial position under and adjacent said trailer roof, through saidopening to a final position outwardly of said opening and overlaying theupper edges of said erected side and end panel means,

i. first releasable means for securing said stable roof panel means inits said initial position,

j. second releaseable means for securing said stable roof panel means,in its said final position, to said erected side and end panel means.

2. The apparatus of claim 1 wherein the support means slidable supportmeans.

3. The apparatus of claim 1 wherein the support means is pivotal supportmeans.

4. The apparatus of claim 1 wherein the stable side panels, whenvertically disposed, have upper edges sloping downwardly from a highpoint at their ends adjacent said trailer to a low point at their endsadjacent said stable end panel means.

5. The apparatus of claim 4 wherein the foldable stable side panel meansare foldable along their median lines.

6. In a camper trailer having a wall opening and a box base, thecombination of a collapsible, stable panel foldout bunk shelter in saidtrailer movably associated with said opening, comprising,

a. movable rectangular floor means initially horizontally disposed insaid trailer at the lower edge portion of said opening,

b. support means movably mounting said floor means on said body base,for conveying said floor means from said initial position in saidtrailer through said opening to substantially horizontal final positionoutwardly of said opening with the inner edge of said floor meansdisposed adjacent the lower edge portion of said opening, said supportmeans being adapted to reconvey said floor means to its said initialposition in said trailer,

c. a pair of similar, foldable, stable side panel means, op-

positely disposed, having corresponding lower edges disposed along andadjacent the opposite side edges of said floor means, respectively,

d. first hinge means hingedly connecting said side panel means to saidfloor means, at said corresponding edges and said opposite side edges,respectively, said side panel means being movable from a positionoverlaying said floor means to a vertical erected position,

e. stable end panel means having a lower edge thereof disposed along andadjacent the outer edge of said floor means,

f. second hinge means hingedly connecting said end panel means to saidfloor means at said end panel lower edge and said outer end floor edgerespectively, said end panel means being movable from a positionoverlaying said floor means to a vertical erected position,

g. stable roof panel means disposed over and adjacent the upper edges ofsaid side panel means,

h. third hinge means hingedly connecting said stable roof panel means,at its side edges, to the upper edges of said side panel means,respectively, said roof means being movable from a collapsed positionoverlaying said floor to an elevated erected position along with saiderectable side panel means, and

i. releaseable means for securing said erected stable end panel means tosaid erected stable roof panel means. 7.'The apparatus of claim 6wherein the support means is slidable support means.

8. The apparatus of claim 10 wherein the support means is pivotalsupport means.

9. The apparatus of claim 6 wherein the foldable stable side panelmeans, when vertically disposed, have upper edges sloping downwardlyfrom a high point at their ends adjacent said trailer to a low point attheir ends adjacent said end panel means.

10. The apparatus of claim 9 wherein the foldable stable side panelmeans are foldable along their median lines.

11. The apparatus of claim 7 wherein the slidable support means supportthe floor means, in its final outward position, in cantilever fashion.

1. In a camper trailer having a wall opening, a box base, and roofmeans, the combination of a collapsible, stable panel, foldout bunkshelter in said trailer movably associated with said opening,comprising, a. a movable rectangular floor means initially horizontallydisposed in said trailer at the lower edge portion of said opening, b.support means movably mounting said floor means on said box base, forconveying said floor means from said initial position in said trailer,through said opening, to a substantially horizontal final positionoutwardly of said opening with the inner edge of said floor meansdisposed adjacent the lower edge portion of said opening, c. a pair ofsubstantially rectangular, rigid, similar, stable side panel means,oppositely disposed, having corresponding edges disposed along andadjacent the opposite side edges of said floor means, respectively, d.first hinge means hingedly connecting said stable side panel means tosaid floor means at said corresponding edges and said opposite sideedges, respectively, said side panel means being movable from acollapsed position overlaying said floor means to a vertical erectedposition, respectively, e. a substantially rectangular stable end panelmeans having an edge thereof disposed along and adjacent the outer endedge of said floor means, f. second hinge means hingedly connecting saidstable end panel means to said floor means at said end panel edge andsaid floor outer end edge, respectively, said end panel mean beingmovable from a collapsed position overlaying said floor means to avertical erected position, g. a substantially rectangular stable roofpanel means to cover the zone defined by said erected side and end panelmeans and overlay the upper edge of said erected side and end panelmeans, h. third hinge means hingedly connecting said stable roof panel,at an edge thereof, to said trailer roof means operative to swing froman initial position under and adjacent said trailer roof, through saidopening to a final position outwardly of said opening and overlaying theupper edges of said erected side and end panel means, i. firstreleasable means for securing said stable roof panel means in its saidinitial position, j. second releaseable means for securing said stableroof panel means, in its said final position, to said erected side andend panel means.
 2. The apparatus of claim 1 wherein the support meansis slidable support means.
 3. The apparatus of claim 1 wherein thesupport means is pivotal support means.
 4. The apparatus of claim 1wherein the stable side panels, when vertically disposed, have upperedges sloping downwardly from a high point at their ends adjacent saidtrailer to a low point at their ends adjacent said stable end panelmeans.
 5. The apparatus of claim 4 wherein the foldable stable sidepanel means are foldable along their median lines.
 6. IN a campertrailer having a wall opening and a box base, the combination of acollapsible, stable panel foldout bunk shelter in said trailer movablyassociated with said opening, comprising, a. movable rectangular floormeans initially horizontally disposed in said trailer at the lower edgeportion of said opening, b. support means movably mounting said floormeans on said box base, for conveying said floor means from said initialposition in said trailer, through said opening to substantiallyhorizontal final position outwardly of said opening with the inner edgeof said floor means disposed adjacent the lower edge portion of saidopening, said support means being adapted to reconvey said floor meansto its said initial position in said trailer, c. a pair of similar,foldable, stable side panel means, oppositely disposed, havingcorresponding lower edges disposed along and adjacent the opposite sideedges of said floor means, respectively, d. first hinge means hingedlyconnecting said side panel means to said floor means, at saidcorresponding edges and said opposite side edges, respectively, saidside panel means being movable from a position overlaying said floormeans to a vertical erected position. e. stable end panel means having alower edge thereof disposed along and adjacent the outer edge of saidfloor means, f. second hinge means hingedly connecting said end panelmeans to said floor means at said end panel lower edge and said outerend floor edge respectively, said end panel means being movable from aposition overlaying said floor means to a vertical erected position, g.stable roof panel means disposed over and adjacent the upper edges ofsaid side panel means, h. third hinge means hingedly connecting saidstable roof panel means, at its side edges, to the upper edges of saidside panel means, respectively, said roof means being movable from acollapsed position overlaying said floor to an elevated erected positionalong with said erectable side panel means, and i. releaseable means forsecuring said erected stable end panel means to said erected stable roofpanel means.
 7. The apparatus of claim 6 wherein the support means isslidable support means.
 8. The apparatus of claim 10 wherein the supportmeans is pivotal support means.
 9. The apparatus of claim 6 wherein thefoldable stable side panel means, when vertically disposed, have upperedges sloping downwardly from a high point at their ends adjacent saidtrailer to a low point at their ends adjacent said end panel means. 10.The apparatus of claim 9 wherein the foldable stable side panel meansare foldable along their median lines.
 11. The apparatus of claim 7wherein the slidable support means support the floor means, in its finaloutward position, in cantilever fashion.